US5690664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trocar having movable blade
Assignee: Covidien LP
•
Filing: 1996-09-18
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Granted: 1997-11-25
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Expires: 2016-09-18
Abstract
Abstract A surgical apparatus is provided for penetrating body tissue. The apparatus includes a cannula and an obturator configured for insertion into the cannula. The obturator has a body tissue cutting member mounted to a distal portion which is movable between deployed and non-deployed positions. An actuating mechanism is operatively associated with the tissue cutting member and is selectively controllable by a user so as to move the tissue cutting member between the deployed and non-deployed positions independent of the position of the obturator.
Inventors
- 👤 Jude S. Sauer
- 👤 Alexander I. Kobilansky
- 👤 Marc J. Theroux
- 👤 Carl T. Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:14
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3494; A61B17/3496; A61B90/00; A61B90/30; A61B2090/306; A61B90/36; A61B90/361
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
147 words
A surgical apparatus comprising: a cannula; an obturator configured for insertion into the cannula, the obturator having a proximal portion and a distal portion; a tissue cutting member mounted to the distal portion of the obturator and movable between deployed and non-deployed positions; and an actuating mechanism operatively associated with the tissue cutting member, the actuating mechanism being selectively controllable for moving the tissue cutting member between the deployed and non-deployed positions independent of the position of the obturator; wherein movement of the actuating mechanism to a cutting member deployment position causes the cutting member to move to the deployed position, the actuating mechanism at the cutting member deployment position also automatically retracts the cutting member to the non-deployed position, wherein the actuating mechanism cannot maintain the cutting member in the deployed position as each deployment of the cutting member causes automatic retraction of the cutting member.
Claim 2
Dependent Claim
147 words
A surgical apparatus comprising: a cannula; an obturator configured for insertion into the cannula, the obturator having a proximal portion and a distal portion; a tissue cutting member mounted to the distal portion of the obturator and movable between deployed and non-deployed positions; and an actuating mechanism operatively associated with the tissue cutting member, the actuating mechanism being selectively controllable for moving the tissue cutting member between the deployed and non-deployed positions independent of the position of the obturator; wherein movement of the actuating mechanism to a cutting member deployment position causes the cutting member to move to the deployed position, the actuating mechanism at the cutting member deployment position also automatically retracts the cutting member to the non-deployed position, wherein the actuating mechanism cannot maintain the cutting member in the deployed position as each deployment of the cutting member causes automatic retraction of the cutting member.
Claim 3
Dependent Claim
20 words
The surgical apparatus according to claim 1, wherein the actuating mechanism includes a trigger operatively associated with the cutting member.
Claim 4
Dependent Claim
81 words
The surgical apparatus according to claim 1, wherein the actuating mechanism comprises: at least one pusher member having a proximal portion and a distal portion connected to the tissue cutting member, the at least one pusher member being operatively associated with the obturator and longitudinally movable relative thereto; a drive mechanism connected to the proximal portion of the at least one pusher member; and a trigger operatively connected to the drive mechanism for longitudinally moving the at least one pusher member.
Claim 5
Dependent Claim
62 words
The surgical apparatus according to claim 3, wherein the trigger is movable between first and second positions such that movement of the trigger to the first position causes the at least one pusher member to move the tissue cutting member to the deployed position, and causes the at least one pusher member to move the tissue cutting member to the non-deployed position.
Claim 6
Dependent Claim
24 words
The surgical apparatus according to claim 1, wherein in the non-deployed position, the tissue cutting member is positioned within a recess in the obturator.
Claim 7
Dependent Claim
32 words
The surgical apparatus according to claim 1 further comprising a housing positioned at the distal portion of the obturator and configured to receive the tissue cutting member when in the non-deployed position.
Claim 8
Dependent Claim
18 words
The surgical apparatus according to claim 1, wherein the tissue cutting member comprises a blade having an apex.
Claim 9
Dependent Claim
17 words
The surgical apparatus according to claim 1, wherein the tissue cutting member comprises an arcuate shaped blade.
Claim 10
Dependent Claim
15 words
The surgical apparatus according to claim 1, wherein the cutting member comprises a cutting blade.
Claim 11
Dependent Claim
20 words
The surgical apparatus according to claim 9, wherein the actuating mechanism includes a trigger operatively associated with the cutting member.
Claim 12
Dependent Claim
32 words
The surgical apparatus according to claim 10, wherein movement of the trigger in a first direction moves the blade to the deployed position and then moves the blade to the non-deployed position.
Claim 13
Dependent Claim
45 words
The surgical apparatus according to claim 1, further comprising a first spring for moving a drive hammer in a distal direction to move the cutting member to the deployed position and a second spring for causing movement of the cutting member to the non-deployed position.
Claim 14
Dependent Claim
43 words
The surgical apparatus according to claim 12, further comprising a bushing engagable by the drive hammer to move the cutting member to the deployed position, and wherein the second spring moves the bushing proximally to move the cutting member to the non-deployed position.
Claim 15
Dependent Claim
168 words
A surgical apparatus comprising: a cannula; an obturator configured for insertion into the cannula, the obturator having a proximal portion and a distal portion and defining a longitudinal axis; a blade mounted adjacent the distal potion of the obturator and extending at an angle with respect to the longitudinal axis of the obturator; an actuating mechanism having a proximal portion associated with the proximal portion of the obturator and a distal portion operatively connected to the blade, the actuating mechanism configured to move the blade between a retracted position within the distal portion of the obturator and an extended position extending from the obturator wherein movement of the actuating mechanism to a blade deployment position causes the blade to move to the extended position, the actuating mechanism at the blade deployment position also automatically retracts the blade to the retracted position, wherein the actuating mechanism cannot maintain the cutting member in the extended position as each deployment of the cutting member causes automatic retraction of the cutting member.
Claim 16
Dependent Claim
168 words
A surgical apparatus comprising: a cannula; an obturator configured for insertion into the cannula, the obturator having a proximal portion and a distal portion and defining a longitudinal axis; a blade mounted adjacent the distal potion of the obturator and extending at an angle with respect to the longitudinal axis of the obturator; an actuating mechanism having a proximal portion associated with the proximal portion of the obturator and a distal portion operatively connected to the blade, the actuating mechanism configured to move the blade between a retracted position within the distal portion of the obturator and an extended position extending from the obturator wherein movement of the actuating mechanism to a blade deployment position causes the blade to move to the extended position, the actuating mechanism at the blade deployment position also automatically retracts the blade to the retracted position, wherein the actuating mechanism cannot maintain the cutting member in the extended position as each deployment of the cutting member causes automatic retraction of the cutting member.
Claim 17
Dependent Claim
20 words
The surgical apparatus according to claim 14, wherein the actuating mechanism is actuable independent of the position of the obturator.
Claim 18
Dependent Claim
40 words
The surgical apparatus according to claim 14, wherein the actuating mechanism includes a trigger movable in a first direction to move the blade to the extended position and includes release structure to automatically return the blade to the retracted position.
Claim 19
Dependent Claim
22 words
The surgical apparatus according to claim 14, wherein the obturator includes a transverse recess to receive the blade in the retracted position.
Claim 20
Dependent Claim
18 words
The surgical apparatus according to claim 17, wherein the blade has two angled edges terminating at an apex.
Claim 21
Dependent Claim
14 words
The surgical apparatus according to claim 17, wherein the blade is arcuate in configuration.
Claim 22
Dependent Claim
34 words
The surgical apparatus according to claim 14, further comprising first and second longitudinally extending pusher arms operatively connected to the blade and the trigger for moving the blade between the extended and retracted positions.
Claim 23
Dependent Claim
43 words
The surgical apparatus according to claim 14, further comprising a first spring for moving a drive hammer in a distal direction to move the blade to the extended position and a second spring for causing movement of the blade to the retracted position.
Claim 24
Dependent Claim
36 words
The surgical apparatus according to claim 21, further comprising a bushing engagable by the drive hammer to move the blade to the extended position, and wherein the second spring moves the blade to the retracted position.
References Cited (Backward Citations)
US1380447A
Cited
US2699770A
Cited
US3538916A
Cited
US3809095A
Cited
US3762416A
Cited
US3915169A
Cited
SU537677A1
Cited
US4220155A
Cited
US4210146A
Cited
US4256119A
Cited
US4254762A
Cited
US4461305A
Cited
US4411653A
Cited
US4516575A
Cited
US4601710A
Cited
US4601710B1
Cited
US4539976A
Cited
US4653475A
Cited
US4570632A
Cited
US4559041A
Cited
US4667684A
Cited
US4723545A
Cited
US4790312A
Cited
US4733671A
Cited
US4991600A
Cited
US5089000A
Cited
US4962770A
Cited
US4957112A
Cited
US5146921A
Cited
US5066288A
Cited
US5092872A
Cited
US4976269A
Cited
US5116353A
Cited
US5116353B1
Cited
US5104382A
Cited
US5152754A
Cited
US5183053A
Cited
US5186178A
Cited
US5176695A
Cited
DE9112976U1
Cited
US5158552A
Cited
US5406940A
Cited
US5275583A
Cited
US5354302A
Cited
US5385572A
Cited
US5372588A
Cited
US5314417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-24 | 2001-05-26 | 2001-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-24 | 2005-05-26 | 2005-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-24 | 2009-05-26 | 2009-11-25 | $7700.00 | Window Closed / Lapsed |